yes I followed the tutorial you provided and it gets me to extract the .sav file it doesn't give me any GBABF errors in using it the only problem it gives me is that the modified file doesn't get me to insert it into the bootleg cartridge i.e. it gets me to insert it, I load it into GBA Backup Tool, go into the software I select the .sav to insert it into, it loads it for me, however when I access the game it gives me the unmodified save as if I never extracted it.